from typing import *
from leetcode.editor.common.node import *


# leetcode submit region begin(Prohibit modification and deletion)
class Solution:
    def reverseString(self, s: List[str]) -> None:
        left , right = 0,len(s)-1
        while left <=right:
            s[left],s[right] = s[right],s[left]
            left +=1
            right -=1
# leetcode submit region end(Prohibit modification and deletion)


if __name__ == '__main__':
    solution = Solution()
    # your test code here